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Pivot shaft structure for supporting swing arm

a technology of pivoting shaft and swing arm, which is applied in the direction of cycle equipment, transportation and packaging, cycle, etc., can solve the problems of difficult torque control and significant cost, and achieve the effect of facilitating the control of the tightening torque, reducing the number of steps for controlling the tightening torque, and reducing the number of components

Inactive Publication Date: 2007-01-16
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a pivot shaft for mounting a swing arm to a vehicle body frame, which can be easily tightened using a multi-purpose tool. The shaft is connected to the vehicle body frame with a nut member and a bolt, which can be rotated by the multi-purpose tool. This eliminates the need for a specific tool and makes it easier to control the tightening torque. The invention also includes a holding member and a bolt that are integrally formed, reducing the number of components and facilitating management. Overall, the invention simplifies the process of mounting a swing arm to a vehicle body frame.

Problems solved by technology

. . has a significant cost.
In addition, since it is required to use the specific tool for the locknut 110 in the related art, torque control is difficult, and hence a number of steps are required for torque control.

Method used

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  • Pivot shaft structure for supporting swing arm
  • Pivot shaft structure for supporting swing arm
  • Pivot shaft structure for supporting swing arm

Examples

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Embodiment Construction

[0038]Referring now to the drawings, embodiments of the present invention will be described.

[0039]FIG. 1 is a side view of a motorcycle employing a swing arm structure according to the present invention, in which a motorcycle 10 is a vehicle having a handle 11, a front fork 12 and a front wheel 13 to be steered by the handle 11 disposed on the front portion of the vehicle body. A vehicle body frame 14 is disposed from the front of the vehicle body to the center portion of the vehicle body with an engine (not shown) mounted to the vehicle body frame 14. A swing arm 15 is attached to the lower portion of the vehicle body frame 14 so as to be capable of a swinging motion with a rear wheel 16 attached to the rear end of the swing arm 15.

[0040]The motorcycle 10 includes a wind screen 21 that is provided together with a head lamp 22, a front fender 23, a cowling 24, a fuel tank 25, a seat 26, a luggage box 27, a stand 28, a grab rail 29, an exhaust pipe 31, a muffler 32, a rear fender 33,...

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PUM

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Abstract

A pivot shaft includes a shaft member having a male screw portion to be thread-connected to a vehicle body frame, and a nut member having a female screw portion to be thread-connected to part of a male screw portion of the shaft member corresponding to a projecting thread portion projecting from the vehicle body frame. The nut member as a locknut is attached so as to prevent the rotation of the adjusted shaft member. The locknut is a nut member formed into a cap-shape or a ball-head locknut shape. A tool engaging portion to which a multi-purpose tightening tool can be engaged is formed on the nut member. Since the multi-purpose tool can be engaged with the tool engaging portion on the nut member accurately, control of a tightening torque is facilitated, and the number of steps for controlling the tightening torque can be reduced.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority under 35 USC 119 to Japanese Patent Application No. 2003-168411 filed on Jun. 12, 2003 the entire contents thereof is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an improved technology for a pivot shaft structure used for making a vehicle body frame support for a swing arm.[0004]2. Description of Background Art[0005]In a motorcycle, a rear wheel is attached to a vehicle body frame via a swing arm for mounting the rear wheel to the vehicle body frame so as to be capable of swinging in the vertical direction. A pivot shaft is an element used for connecting the swing arm to the vehicle body frame.[0006]In the related art, it is known that a locknut is used for a pivot shaft of a motorcycle. See, for example, JP Patent No.2564078 (FIG. 1).[0007]FIG. 16 is a drawing that is disclosed in JP Patent No.2564078. However, th...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A47G3/00B62K25/20B62K25/28
CPCB62M17/00B62K25/283
Inventor MANAKA, AKIOHAYASHI, KANJI
Owner HONDA MOTOR CO LTD